<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

</body>
</html>
<script>
    var obj = {num:111}
    console.log(obj);
    function text1(o) {
        o.name = "liushikun"
    }
    text1(obj)
    console.log(obj)
</script>